Adin mayo baebeb



(No Model.)

A.M..BARBBR.

SWING MACHINE.

Patented Nov. 10,V 1885.

l '"B f UNITED STATES PATENT ADIN MAYO BARBER, OF BRIDGEPORT,CONNECTICUT, ASSIGNOR TO THE AMERICAN HAND SEWING MACHINE COMPANY, OFNEW YORK, N. Y.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent N o. 330,195,dated November10, 1885.

Application filed March 2,1885.

To wllwwm it may concern:

ABe it known that I, ADIN M. BARBER, a citizen ofthe United States,residing at Bridgeport, in the county of Fairfield and State ofConnecticut, have invented certain new and useful Improvements inSewing-Machines; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to that class of sewingmachines whose operativeparts are mounted upon and driven by a pair of levers or handles pivotedtogether, of the character described in my Letters Patent Nos. 306,713and 306,996, dated October 21, 1884, and to improvements in theaforesaid class of machines, whereby they maybe attached to a stand ortable, and operated directly by hand, or by treadle, or by treadlethrough a drivingshaft, and whereby a chain-stitch may be producedinstead of a lock-stitch.

In the drawings, Figure 1 is a side eleva tion of the machine, shownmounted upon a table, with mechanism connected for operating throughfly-wheel in the lusual way, and for operating by hand when disconnectedfrom the ily-wheel. Fig. 2 is an elevation of the reverse side of themachine, showing needle down, and mechanism whereby the levers may beoperated by the foot through a simple stirrup and pitman, or by handwhen stirrup and pitman are detached. Fi g. 3 is a plan of looping-hookand driver for same; and Fig. 4 is a detail showing loop-spreader.

A and A are two pivotally connected levers upon which all the workingparts of the machine are mounted. The lever A carries the looping-hook,work-plate, and spool, and is adapted to be secured to a holder, B',which is rigidly connected with the table B. Lever A carries the needle,and is connected by a knuckle-joint with a vibrating or tilting lever,C. This lever is pivoted on the end of a link,

c, which is carried on the back of the holder- B, and it is operatedthrough a pitman, o', and eccentric mounted on a small shaft beneath thetable, which is driven through treadle and pulley. It is obvious ythatany equivalent of the lever C and its connections with Serial No.157,536. (No model.)

the machine might be substituted for it and as good results obtained. Ifdesired, the pitman c may be disconnected from the lever C, and saidlever then be operated by hand. In such case a spring is provided tothrow the lever upward.

In Fig. 2 I have shown a simple stirrup and connecting-rod for operatingthelever C as an alternative of treadle, ily-wheel, and eccentricconnections shown in Fig. 1. This Lstirrup may he unhooked and themachine operated by hand, at the will of the operator. In either case Iprovide a spring to give lever C the upward movement.

A swinging post, D, is mounted on the lever A, and is provided at itsupper end with two lugs, d d, against which cani-faces on the pieces e ework. The lower end of this post has extending from it an arm, d, theend of which plays between cam-jaws g, formed at the inner end of the'looping-hook E. The looping-hook is pivoted a little at one side, andis arranged to vibrate around and to take the loop from the outside ofthe needle. A small pin, v3, projects from the under side of the hook,near the point, for the purpose of preventing the loop from slipping toofar over the point of the hook. A loop spreader, x, Fig. 4, consistingof a triangular piece of metal, is attached to the under side of thework plate, near the hole that the needle passes through, and isarranged so that one of the points of the triangle will strike betweenthe strands of the loop and hold them apart until the needle passesthrough the loop.

The spool is mounted in any convenient manner on the inner end of leverA, aud the thread passes through guide-eyes and a suitable tensiondevice to the needle.

The same construction of presser-foot and feed as is described in myLetters Patent No. 306,996 is used in connection with this machine.

The operation of forming the stitch is as follows: Pressure beingapplied to the lever C, the lever A is thrown downward, aud the needlepasses through the fabric and below the looper. As the lever A moves,the cam e', acting on one of the lugs d, throws the arm d in thedirection indicated by the arrow, Fig. 3. This moves the hook in acontrary direc- IOO tion, or away from the needle.

the hook forward, or toward the needle, and it passes between the threadand needle just before the eye of the needle has risen to the hook. Thethread has now been caught over the point of the hook and is held fromslipping along the hook by the pin t'. needle continues to rise the hookcontinues its forward movement away from the path of the needle,carrying the loop with it, until its two threads have been opened by thetriangular spreader, at which time the lever A is at its highest point.After the needle has passed entirely out of the goods the feed operatesand moves the work forward the length of one stitch. While'the needle ismoving toward the work there islost motion between the camjawsg and thearm d to allow the Vneedle to pass through the loop before the hookmovesback to drop it. Having now described my invention, what I claim isl. The combination of a pair of levers of the first order,stitch-forming mechanism, means forclamping one lever to a support ortable,

va vibrating arm for operating the other lever, and a treadle foroperating the vibrating arm, substantially as described.

As lever AQ moves upward thecam e operates to throw As the 2. Thecombination of a pair of levers of 3o the first-order pivoted together,stitch-forming mechanism, means for clamping one lever to a support ortable, a vibrating arm for operating the other lever, and atreadle-driven shaft for operating the vibrating arm, substantially asdescribed. o

3. The combination, in a sewing-machine whose stitch-forming mechanismis mounted upon and operated by two levers of the rst order pivotedtogether, of a holder for clamping one lever to the table, a vibratingarm for operating the other lever, and a link for supporting thevibrating arm, substantiallyas described.- v

4. The combination, in a sewing-machine,

of a pair of levers of the rst order pivoted together, and a vibratinglooper driven'by an oscillating lever which is operated by the .relativemovement of the levers, substantially as described.

In `testimony whereof I affix my signature in presence of two Witnesses.

ADIN MAYO BARBER.

Vitnesses:

WM. H. KELsnY, R, VALENTINE.

